head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Systems & Chaos
Blizzard's mobile Diablo where loot RNG and paid gem systems drive character power.

Optimization · Pure Optimization
A zombie survival sim where long-term planning outweighs moment-to-moment skill.
Diablo Immortal leans Optimization (Systems & Chaos); Project Zomboid leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo Immortal
Touch-friendly combat with dodge timing
Project Zomboid
Combat is deliberate; precision matters but is slow.
Diablo Immortal leans a little harder on reads, though the gap is small.
Diablo Immortal
PvP battlegrounds exist but gear usually decides
Project Zomboid
Zombies follow scripted behaviour; no adaptation.
Diablo Immortal leans a little harder on variance, though the gap is small.
Diablo Immortal
Legendary gem and loot RNG, heavily monetized
Project Zomboid
Loot spawns and zombie distributions randomized.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Diablo Immortal
Resonance, paragon, set optimization dominate power
Project Zomboid
Skill grinding, base setup, and routing define survival.
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.